Protective unit for airport runway light fixtures



FIG. 1 is a perspective view of the inventive design.

FIG. 2 is a side elevational view thereof, all the sides being identical.

FIG. 3 is a top elevational view of my new design for a protective system for airport runway light fixtures; and,

FIG. 4 is a bottom view thereof.

The broken line showing of environmental structure in FIG. 1 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a protective unit for airport runway light fixtures, as shown and described. 